Sail E0 Webinar

MCQs

Total Questions : 323 | Page 30 of 33 pages
Question 291. For three-phase induction motors which of the following is the least efficient method of speed control ?
  1.    Cascade control
  2.    Pole changing
  3.    Rheostat control
  4.    Combination of cascade and pole changing
 Discuss Question
Answer: Option C. -> Rheostat control
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 292. The value of co-efficient of adhesion will be high when rails are_________________?
  1.    greased
  2.    wet
  3.    sprayed with oil
  4.    cleaned with sand
 Discuss Question
Answer: Option D. -> cleaned with sand
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 293. Battery operated trucks are used in________________?
  1.    steel mills
  2.    power stations
  3.    narrow gauge traction
  4.    factories for material transportation
 Discuss Question
Answer: Option D. -> factories for material transportation
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 294. The voltage used for suburban trains in D.C. system is usually_______________?
  1.    12 V
  2.    24 V
  3.    220 V
  4.    600 to 750 V
 Discuss Question
Answer: Option D. -> 600 to 750 V
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 295. Vacuum is created by which of the following ?
  1.    Vacuum pump
  2.    Ejector
  3.    Any of the above
  4.    None of the above
 Discuss Question
Answer: Option C. -> Any of the above
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 296. Specific energy consumption becomes________________?
  1.    more on steeper gradient
  2.    more with high train resistance
  3.    less if distance between stops is more
  4.    all of the above
 Discuss Question
Answer: Option D. -> all of the above
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 297. _______________method can bring the locomotive to dead stop?
  1.    Plugging braking
  2.    Rheostatic braking
  3.    Regenerative braking
  4.    None of the above
 Discuss Question
Answer: Option A. -> Plugging braking
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 298. The resistance encountered by a train in motion is on account of_________________?
  1.    resistance offered by air
  2.    friction at the track
  3.    friction at various parts of the rolling stock
  4.    all of the above
 Discuss Question
Answer: Option D. -> all of the above
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 299. Series motor is not suited for traction duty due to which of the following account ?
  1.    Less current drain on the heavy load torque
  2.    Current surges after temporary switching off supply
  3.    Self relieving property
  4.    Commutating property at heavy load
 Discuss Question
Answer: Option B. -> Current surges after temporary switching off supply
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 300. The return circuit for tramcars is through_______________?
  1.    neutral wire
  2.    rails
  3.    cables
  4.    common earthing
 Discuss Question
Answer: Option B. -> rails
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Latest Videos
Chapter 1 - GLOBAL STEEL SCENARIO & INDIAN STEEL INDUSTRY Part 1 : (13-04-2024) INDUSTRY AND COMPANY AWARENESS (ICA)
Direction Sense Test Part 1 Reasoning (Hindi)
Chapter 1 - RMHP / OHP / OB & BP Part 1 : (14-02-2024) GPOE
Cube & Cuboid Part 1 Reasoning (Hindi)
Data Interpretation (DI) Basic Concept Reasoning (Hindi)
Counting Figures Part 1 Counting Of Straight Lines Reasoning (Hindi)
Sail E0 free webinar Webinars
Real Numbers Part 7 Class 10 Maths
Real Numbers Part 1 Class 10 Maths
Polynomials Part 1 Class 10 Maths

Latest Test Papers

GPOE / GPA Combined 1 Free Mock Test SAIL JO E-0 2024
Chapter 3.1 : INTRODUCTION Chapter 3 : Sinter Plant SAIL E0 - GPOE/GPA 2024
Chapter 2.3 : COAL HANDLING PLANT - Set 1 Chapter 2 : Coke Ovens and Coal Chemicals SAIL E0 - GPOE/GPA 2024
Chapter 1.1 : INTRODUCTION Chapter 1 : Raw Material Handling Plant SAIL E0 - GPOE/GPA 2024
DSP Combined 1 Free Revision Test SAIL JO E-0